const CryptoJS = require('crypto-js');


// 十六位十六进制数作为密钥
const SECRET_KEY = CryptoJS.enc.Utf8.parse("1234123412341234");
// 十六位十六进制数作为密钥偏移量
const SECRET_IV = CryptoJS.enc.Utf8.parse("1234123412341234");


/**
 * 加密方法
 * @param data
 * @returns {string}
 */
function encrypt(data) {
    if (typeof data === "object") {
      try {
        // eslint-disable-next-line no-param-reassign
        data = JSON.stringify(data);
      } catch (error) {
        console.log("encrypt error:", error);
      }
    }
    const dataHex = CryptoJS.enc.Utf8.parse(data);
    const encrypted = CryptoJS.AES.encrypt(dataHex, SECRET_KEY, {
      iv: SECRET_IV,
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7
    });
    return encrypted.ciphertext.toString();
  }


  /**
 * 解密方法
 * @param data
 * @returns {string}
 */
function decrypt(data) {
    const encryptedHexStr = CryptoJS.enc.Hex.parse(data);
    const str = CryptoJS.enc.Base64.stringify(encryptedHexStr);
    const decrypt = CryptoJS.AES.decrypt(str, SECRET_KEY, {
      iv: SECRET_IV,
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7
    });
    const decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
    return decryptedStr.toString();
}



// const data = "13172" 20080708

// const encryptText = encrypt(data);
// console.log("加密", encryptText);

// const decryptText = decrypt(encryptText);
// console.log("解密", decryptText);

module.exports = {
    decrypt,
    encrypt
}

